Pipe-joint and method of producing same.



B. B. HOWELL.

PiPE JOINT AND METHOD .OF PRODUCING SAME. APPLICATION FILED MAY 25. 1918.

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Patented J an. 7, 1919.

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Application filed Mama, 19183 Se1'ia1Nol2 6J 5l5.

B it known that I RQBEltT Pi. Hewett,

a eiti z en ofthe United States, residing at Omaha, in the county of Douglas and State of Nebraskm have inyentedjcertain new and useful lmproyen ents in Pipe -,J oli nt s and Methods bf Producing Same, of whieh the followingis a specification, yrre i l n iqn pe a n t9 d proved pipe "joint and to the method ofproducing the same. i The m th n c mon y; mploy d joining bell and spigot cast iron water pipes istoinsert the spigot of one pipeinto the bell of another, leaying a uniform space around and between the parts and filling the space with molten lead, the lead afterward being driven l more tightly into the bell by the known process of calking. Asthe-junc tion of the spigot ,witli the inside base of the bell of the following pipe is not necessarily tight, to, prevent molten lead; when poured into the bell, from filtering through intothe pipe, strands of jute yarn are first inserted and driven into the bell, tlius producing, in edejct, a dam. Jute yarn is commonly known or, termed as apacking andthelead as a filler. The talking is necessary in order to drive or wedgethe lead into thebell to pro duce a joint which will not leak. Fillers other than lead have b'eendeyised which do not depend upon calking for tightness but on their tendency to adhere tIOf the netal. However, in the case ofsueh fillers there is a lack ofuniformityi in. adhesion and, as a consequence, seepage or leaks lwillooour, under high pressure, at various points about such a joint, the water working its way between the filler and the metal of the hell or spigot, asthe case may be.

The present inventipn has for its inain object the production of a joint in whichrelatively cheap materials ,rnay be employed to produce a water-tight joint and f Q1161 ,which does not require any calking and which may be used upon both small and large, pipesand applied with facility. Stated in broad guage, the joint may 1 be said to comprise a body which under the aetion of the water flowing through theinain orpipe will tend to disintegrate or silt and be carried into the outermost layer or constituent member of the joint which is'preferably forined of a particular material hereinafter referred to, In other words, I have produced a joint which through the automatic silting o fone portion oint will; close upall ieaisw ieh exist in the outermost portion or the joint. Moreover the jointlrequires the taking,

In, the annexed drawings I haiq soiight to illustrate the manner in which this joint is formed, wherein, 4 v

longitudinal, Seaman v ew lt e lt talfli of the weet a d hslleeklb, adiek e 1 showing theinitlal packingin togetl t t a l with e e em, filte whi h. e pl y t6 assr in the pouring and pl a'oeiiient of the silt ng material; r i

a Fie tater rlanwvi mi tly n' away, showing thesa ne relation of Fig. 3 a detail s eetiona l View on an enlarged scale, of joint; and

F g. fl a perspective iew or a portion of the fle ribl'e tube e pieyed te rent the danii I a d fieeleeldeee e t tll d *b pipe and 2 the spigot eiidoftho idla eht pipeor main section, parts as seinbled will hfive, plaoed a rak fillet f j iii i t'd at Af er t is p s idl d ibb rft iidioated by 4, wn bereieea i me the an of the belland are eras o the time be carried outwardly as indicated in, Figs. 1 and 2, at the ouberInost-portion off the pipe orinain. As will be best noted upon reference to- Fig, t the tube ,ispiovided with a series of longitudinal slots or openings 6 formed therein alongone side, wliikih slots allow the tube to collapse mot readily and insures its proper placement within the bell of the pipe. Mel-eaves site "sites op-enings faoilitate thinsei'tioii (if a to'dl thi'if through in order that the inner p tion of the tutemay be niore ifadilf fjqiee'i t' place and thus insure as pro elpositionin withi ei ten, A e061 emit Shawnee-high, Whioh shoulder steamed to; coiitact the le uuigor he bell ins re the ie ei plea-1ementoflthe tube withiv thebellf- I her and:

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After the tube is thhs positioh'dagate, asy7," such; as connnonly empieyeamthe pee in f lead i n s P nt ed' t t e ppe d ie se t e jd 6f th melee eat opening into the space indi'ciated by 8 (Fig 2) left between! the inclined or diyei gent seetiohs o fthe tube. I thea pbui-Jiatti spate lea bew e rj h dam fi e i t w and the outerinost face of the packing 3, a suitable material which will silt under the materially shrink when it cools.

action of the water which passes through the jute or packing 3, when the water is turned into the main. Such material will preferably be composed of clay or pulverized unslaked lime, preferably the former, flowers of sulfur and sand, so proportioned and in- V timately mixed that when subjected to heat and melted it will pour like metal. The material, indicated by 9, (Fig. 3) readily sets and when so set the tube 4 will be pulled out of place leaving a space in the outermost end of the bell. There will, of course,

be formed a gate button and this button is knocked 0E and the adjacent silting material or filler 9 will be chiseled out at this point so as to make it of substantially the same thickness as the cast in portion which extends around the bell. An ordinary runner is then placed about the spigot end 2 adjacent the bell and the final filling, indicated by 10, is poured. This material is preferably a composition having sulfur as its base high degree. When water is turned into the.

main or pipe jointed in the manner above specified, it will, of course, seep through the jute 3 strike the silting material 9 and cause its disintegration. Such material will then pass into and close any cracks or crevices which may exist in the outer filler l0.

In practice it has been found that the joint and method of producing the same have given highly satisfactory results under severe service conditions. I have successfully applied the joints to mains as large at 48" in diameter and subject to high pressure. When the joint is employed upon small pipes, say under 2a in diameter, the silting element may be omitted and the silt contained within the water flowing through the pipe depended upon to fill the crack or crevices in the outer member 10. Where, however, as with large mains or pipes, the initial leaking may prove a nuisance, the placing of the silting material 9 in position between the jute and the outermost composition 10 will take up such leakage very readily and effectually stop the same.

7 By employing a tapered plug to form the gate a gate of proper size will always be produced. That is to say, the gate will have proper cross section and will be of proper height t produce the necessary head to facilitate the pouring of the filling or closure. This becomes essential owing to the nature of the material employed, which, as will be appreciated, will cool rapidly and tend to clog the gate if it be too small, and, furthermore, would prevent the material from run nlng around the entire extent of the joint unless a proper head is had.

No claim is herein made to the specific composition forming the element 10 as above set forth as that forms the basis of my a plication filed on or about May 19th, 191%, Serial No. 169,759.

Having described my invention, what I claim as new and desire to secure by Letters Patent is,

1. That method of forming joints between contiguous pipe sections which consists in placing a silting material between adjacent faces of said sections and thereafter placing a filling or closure between such faces at the outermost portion of the joint.

2. That method of forming water-tight joints between contiguous pipe sections which consists in casting a material susceptible' of disintegration through the action of water between adjacent faces of said sections and thereafter casting a filling or closure which is unaffected by water between said faces at the outermost portion of the joint.

3. That method of forming a water-tight union between a bell and spigot pipe joint which consists in placing a jute filling in the base of the bell and around the spigot end, then casting a band or ring of material adjacent said filling, said material being susceptible of disintegration under the action of water, and finally casting a filling or closure in the mouth or outer end of the bell, said closure being hard when set and unaffected by water.

4:. In combination with a bell and spigot of contiguous pipe sections; a silting material surrounding the inner end of the spigot; and a closure placed in the outer end of the bell, said material being hard and unaffected by water.

5. In combination with a bell and spigot of contiguous pipe sections; a seal therefor, said seal comprising a material cast in place and which is disintegrated by the action of water; and a closure for the outer end of the bell, said closure being cast in place and bein hard and unaffected by water.

6. in combination with a bell and spigot of contiguous pipe sections; a seal therefor, said seal comprising a ring-shaped body cast in place and containing sand, sulfur and a substance which disintegrates under the action of water; and a closure for the outer end of the bell, said closure being cast in place and containing sulfur, sand, and a carbonaceous material.

7. That method of forming joints between contiguous pipe sections which consists in placing a silting material between adjacent faces of said sections and thereafter casting faces of said sections and thereafter casting a noh-metallic filling or closure between such a non-metallic filling or closure between such faces at the outermost portion of the joint, 10 faces at the outermost portion of the joint. such filling having sulfur as a base.

5 8, That method of forming joints between In testimony whereof I have signed my contiguous pipe sections which consists in name to this specification. placing a silting material between adjacent ROBERT E. HOWELL.

topic: of this patent may he obtained for five" cents eae h, by addrening the Commissioner of Patents,

Washington, D. 0." 

